Using three questionnaires, the Rutter Parent Questionnaire (RA2), The Rutt
er Teacher Questionnaire (RB2) and the Children's Depression Inventory (CDI
), we screened 8-9-year-old children representing a total annual birth coho
rt (N = 60007) in Finland. In a second stage we interviewed the parents of
119 screen negative, and 316 screen positive children by using a structured
parent interview. At the population level the overall prevalence rate for
psychiatric disturbance was 21.8%, higher among boys (29.8%) than among gir
ls (12.8%). Nine percent of the children were in urgent need of treatment a
nd, in addition, 25% were in need of assessment. The prevalence of differen
t levels of disturbance was: reactive 9.5%; neurotic 18.4%; borderline 3.1%
; and other severe disorders 2.3%. The prevalence of different diagnostic g
roups were: anxiety disorder 5.2%; depressive disorder 6.2%; specific fears
2.4%; defiant and conduct disorder 4.7%; and attention-deficit hyperactivi
ty-disorder 7,1%. The prevalence for the most common single first Axis-I DS
M-III-R diagnoses were: attention-deficit hyperactivity-disorder 7%; dysthy
mia 4.6%; adjustment disorder with mixed disturbance of emotion and conduct
3.4%; oppositional defiant disorder 2.7%; specific fear 1.7%; anxiety diso
rder 1.5%; enuresis nocturnal 1.5%; and depression 1.4%. Only 3.1% of the c
hildren had visited health professionals for psychiatric problems during th
e previous three months. Only a minority of the children with psychiatric d
isturbances had ever consulted health professionals for their problems. Of
all the children, 7.5% had a severe psychiatric disturbance that had lasted
for more than 3 years.